Java JTree Expand expandAll(JTree tree)

Description

Expand all nodes of a tree.

License

Apache License

Parameter

Parameter	Description
tree	The tree whose nodes to expand.

Declaration

public static void expandAll(JTree tree) 

Method Source Code

//package com.java2s;
/*//from ww w.j ava 2 s .com
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import javax.swing.JTree;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;

public class Main {
    /**
     * Expand all nodes of a tree.
     *
     * @param tree The tree whose nodes to expand.
     */
    public static void expandAll(JTree tree) {
        expandAll(tree, new TreePath(tree.getModel().getRoot()));
    }

    /**
     * Expand a tree node and all its child nodes recursively.
     *
     * @param tree The tree whose nodes to expand.
     * @param path Path to the node to start at.
     */
    public static void expandAll(JTree tree, TreePath path) {
        Object node = path.getLastPathComponent();
        TreeModel model = tree.getModel();
        if (model.isLeaf(node)) {
            return;
        }
        tree.expandPath(path);
        int num = model.getChildCount(node);
        for (int i = 0; i < num; i++) {
            expandAll(tree, path.pathByAddingChild(model.getChild(node, i)));
        }
    }
}

Related

1. expandAll(final JTree tree, final TreePath parent, final boolean expand)
2. expandAll(JTree jTree)
3. expandAll(JTree rightTree)
4. expandAll(JTree t)
5. expandAll(JTree tree)
6. expandAll(JTree tree)
7. expandAll(JTree tree, boolean expand)
8. expandAll(JTree tree, boolean expand)
9. expandAllNode(JTree tree, TreePath parent)